// 高度、宽度拓展
.w-full {
  width: 100%;
}

.h-full {
  height: 100%;
}

.w-screen {
  width: 100vw;
}

.h-screen {
  height: 100vh;
}

// flex
.flex {
  display: flex;
}

.flex-1 {
  flex: 1 1 0%;
}

.flex-auto {
  flex: 1 1 auto;
}

.flex-center {
  display: flex;
  justify-content: center;
  align-items: center;
}

.flex-row {
  flex-direction: row;
}

.flex-col {
  flex-direction: column;
}

.flex-wrap {
  flex-wrap: wrap;
}

.flex-nowrap {
  flex-wrap: nowrap;
}

.justify-start {
  justify-content: flex-start;
}

.justify-end {
  justify-content: flex-end;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.justify-around {
  justify-content: space-around;
}

.justify-evenly {
  justify-content: space-evenly;
}

.justify-items-start {
  justify-items: start;
}

.justify-items-end {
  justify-items: end;
}

.justify-items-center {
  justify-items: center;
}

.justify-items-stretch {
  justify-items: stretch;
}

.items-start {
  align-items: flex-start;
}

.items-center {
  align-items: center;
}

.items-end {
  align-items: flex-end;
}

.content-start {
  -ms-flex-line-pack: start;
  -webkit-align-content: flex-start;
  align-content: flex-start;
}

.static {
  position: static;
}

.fixed {
  position: fixed;
}

.absolute {
  position: absolute;
}

.relative {
  position: relative;
}

.sticky {
  position: sticky;
}

// 浮动
.float-right {
  float: right;
}

.float-left {
  float: left;
}

.float-none {
  float: none;
}

.clearfix {
  &:after {
    visibility: hidden;
    display: block;
    font-size: 0;
    content: ' ';
    clear: both;
    height: 0;
  }
}

// 元素类型
.block {
  display: block;
}

.inline-block {
  display: inline-block;
}

.inline {
  display: inline;
}

.hidden {
  display: none;
}

.visible {
  visibility: visible;
}

.invisible {
  visibility: hidden;
}

// 颜色bacground-color 、color
.text-black {
  color: #000;
}

.text-white {
  color: #fff;
}

.bg-black {
  background-color: #000;
}

.bg-white {
  background-color: #fff;
}

// text拓展
.text-left {
  text-align: left;
}

.text-center {
  text-align: center;
}

.text-right {
  text-align: right;
}

.text-justify {
  text-align: justify;
}

.text-bold {
  font-weight: 700;
}

// box-sizing
.box-border {
  box-sizing: border-box;
}

.box-content {
  box-sizing: content-box;
}

// overflow
.overflow-hidden {
  overflow: hidden;
}

.overflow-scroll {
  overflow: scroll;
}

// font-weight
.font-thin {
  font-weight: 100;
}

.font-extralight {
  font-weight: 200;
}

.font-light {
  font-weight: 300;
}

.font-normal {
  font-weight: 400;
}

.font-medium {
  font-weight: 500;
}

.font-semibold {
  font-weight: 600;
}

.font-bold {
  font-weight: 700;
}

.font-extrabold {
  font-weight: 800;
}

.font-black {
  font-weight: 900;
}
